Good-Cooking - Princess Cake

Ingredients

• 3 egg yolks
• 1 egg
• 2/3 cup granulated sugar
• 2/3 cup all-purpose flour
• 1/4 cup potato flour
• 2 teaspoons baking powder
• 3 egg whites
• 1 1/2 teaspoons unflavored gelatin
• 2 tablespoons cold water
• 1 tablespoon granulated sugar
• 2 teaspoons potato flour
• 1 cup heavy cream
• 2 slightly beaten egg yolks
• 1/2 teaspoon vanilla extract
• 1/2 cup whipping cream, whipped
• 1 (9 ounce) roll almond paste (marzipan)
• Few drops green food coloring
• Confectioners' sugar